Milk-strainer.



- No. 724,153. PA.TENTED MAR. '31, 1903. J. W. EARTH.

MILK STRAINER.

APPLICATION FILED JULY 3, 1902.

no MopEL.

flitoriz eyai UNITED STATES PATENT OFFICE.

JOHN EARTH, OF PITTSBURG, PENNSYLVANIA.

MILK-STRAINER.

SPECIFICATION forming part of Letters Patent No. 724,153, dated March e1, 1903. Application filed July 3,1902. $eria1No.114,228. (No model.)

To all whom it may concern:

Be it known that I, JOHN W. EARTH, a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Milk-Strainers; and I do hereby declare the. following to be a full, clear, and exact description thereof.

My invention relates to milk-strainers and its object is to so construct a milk-strainer that the straining fabric. can be quickly removed for cleaning andagain replaced and so that no seams, joints, angles, or other places of lodgment for the milk are presented. To secure these objects, I construct all of the metallic parts of the strainer of seamless pressed sheet metal which has no seams, joints, or angles in which the milk can lodge and sour, and I provide a conical bushing fitting in the lower conical end of the body for clamping the straining fabric in place.

In the accompanying drawings, Figure l is a Vertical section through one form of my milk-strainer. Fig. 2 is a similar View of a modified form.

The body of the strainer is shown at 1, and it is pressed up from a single piece of sheet metal and substantially to the form shown in the figures, having the sides provided with the gradual curve, as at 3, and ending at the bottom in the hollow conical projection 4. This body is absolutely without seam, joint, or angle, and therefore presents no place for lodgment of the milk in which it can sour. The straining fabric is shown at 5, and this preferably will be of cloth, as is the common practice. In order to enable it to be quickly removed for cleaning and again replaced, I provide a bushing 6, which is adapted to fit into the hollow conical projection 4 and clamp the fabric 5 between itself and the lattern When the fabric is folded over the bushing, it will form folds or puckers toward the upper end of said bushing, and there will be a greater thickness of fabric between the bushing and conical projection at the upper portion of the bushing. To provide space for the folded part'of the fabric, the parts will be so constructed that a greater space will exist between the bushing and conical projection at their upper ends than at their lower ends. Preferably this increased space will be secured by making the bushing-ring not quite so flaring as the conical projection on the body, so that the lower end of said bushing will approach close to the inner wall of. the

conical projection. In this manner the fab ric will be clamped tightly near the lower end of the bushing and practically along a line around said bushing, while the upper end of the bushing will remain some distance away from the conical projection. In this way not only is room provided for the folds or puckers of the fabric, but I also find that a firmer hold on the fabric is secured by having the same clamped along the single line around the bushing.

When it is desired to clean the strainer, by merely-turning it upside down and pressing on the fabric the conical bushing will fall out, thus permitting the fabric to be removed and cleaned. To replace the fabric, it is folded over the bushing-ring and the latter dropped down in the strainer and forced down into the conical projection, in which position it will bind the fabric firmly in place. Both the body and the bushing are formed of seamless metal,having neither joint norangle, so that in washing them the milk is thoroughly cleaned therefrom and no portion thereof can lodge in joints or. angles and become sour.

The formof strainer shown in Fig. l is not provided with a foot or base and is intended for use with the ordinary shipping milk-cans.

For the usual domestic purpose the funnel, however, will be provided with a foot, such as shown at Sin Fig. 2.

The lower edge of the bushing 6, as stated, will bind the fabric firmly against the inner walls of the hollow conical projection on the body; but to assist in forming a tight joint at this place I may provide an elastic packing-ring 9,-of rubber or other yielding material. When such packing-ring is used, the bushing 6 will be provided with an annular groove 10, in which the packing-ring is seated.

What I claim as my invention, and desire to secure by Letters Patent, is-- 1. A milk-strainer comprising a body provided with a conical hollow projection in its bottom, a fabric strainer, and a conical bushin g fitting in the conical hollow projection of bushing and conical projection being so.

shaped relatively that the fabric is clamped at a single line only around the bushing near the bottom of the latter and an enlarged space is provided between the upper end of said bushing and the conical projection.

2. A milk strainer comprising a body formed of seamless sheet metal of general funnel shape and having gradual curves from top to bottom, said body being without joint, seam or angle, and having a hollow conical projection in its bottom, a fabric strainer, and a smooth seamless bushing of general conical form fitting inside of the hollow conical projection of the body and serving to clamp the fabric strainer in said projection.

3. A milk-strainer comprising a body having a hollow conical projection in its bottom, a fabric strainer, and a bushing for clamping 4. A milk-strainer. comprising a body form ed of seamless sheet metal without seam, joint or angle, and having a hollow conical projection in its bottom, a fabric strainer, a bushing provided with an annular groove, and an elastic packing'ri'ng held in said groove and adapted to clamp the fabric in the hollow projection of the body.

In testimony whereof I, the said JOHN W. BARTH, have hereunto set my hand.

JOHN W. BARTl-I.

Witnesses:

F. W. WINTER, ROBERT C. TOTTEN. 

